The APEX Automobile Parts Inc AHG389 cylinder head gasket for the 2005-2013 Chevrolet Silverado 1500 4.8L / 5.3L and other vehicles seals the joint between the cylinder head and the engine block. It holds combustion pressure in the cylinders and keeps coolant and oil in their own passages.
A failing engine cylinder head gasket can show up as coolant loss with no outside drip, white exhaust smoke or overheating. A stuck thermostat can also run the engine hot, and a split hose or a leaking water pump can lose coolant. With the engine off and cool, check the coolant level and look for wet spots at the hoses, radiator and water pump; a shop can pressure-test the cooling system. When both heads come off, put a new gasket on each one. This listing is one gasket.
Vehicles it fits include the 2005-2013 GMC Sierra 1500 4.8L / 5.3L and the 2007-2014 Chevrolet Tahoe 4.8L / 5.3L, and it is a direct-fit replacement for these vehicles. Open the Buyer's Guide tab to check your exact model and engine.
In the box: one cylinder head gasket.
Is this the right cylinder head gasket for a 2005-2013 Chevrolet Silverado 1500 4.8L / 5.3L?
Yes. The APEX Automobile Parts Inc AHG389 fits the 2005-2013 Chevrolet Silverado 1500 4.8L / 5.3L. Open the Buyer's Guide tab to match your exact model year and engine.
Which engine sizes is the AHG389 cylinder head gasket made for?
This cylinder head gasket is made for V8-4.8L, V8-5.3L and V8-5.7L engines, with one gasket sealing each cylinder head.
Is the AHG389 sold as a single gasket or a pair?
This listing is a single cylinder head gasket in the package, and that one gasket seals one cylinder head.
What can a leaking cylinder head gasket on these V8 engines look like?
White exhaust smoke, coolant loss with no outside leak, or milky oil on the dipstick can mean a cylinder head gasket is leaking between the head and the block.
Does the AHG389 seal the coolant and oil passages as well as the cylinders?
Yes. The APEX Automobile Parts Inc AHG389 sits between the cylinder head and the block, where it seals combustion pressure and the coolant and oil passages that cross that joint.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
